yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S II SGH-I777] Jank4AU:
Have you tried using other modems for our phone? Just wondering if maybe your router only likes the stock modem and when you're flashing other roms, it might be changing you to a modem your router disagrees with. It's just a suggestion, trying to think outside the box. There are two sets of modem builds, just make sure you get the right ones for the right roms. Also try flashing the stock KH7 modem back over the custom rom. I'm no developer so WTF do i know. Just trying to help a brother out. Good luck.
[AT&T Samsung Galaxy S II SGH-I777] nst6563:
I've tried with both an Asus RTN12 as well as an older Airlink 101. Both B/G/N routers which I've tried the stock firmware as well as dd-wrt. They are setup using channel 1, WPAPSK/AES. Behavior is the same whether the router is set to 20Mhz or 40Mhz. Both routers are based off an RaLink chipset. I don't have a router based on Broadcom (yet).

As for Roms....

UnNamed

ICScrewD

ICS'd out

Coz

Serendipity
[AT&T Samsung Galaxy S II SGH-I777] nst6563:
By modem I assume that's listed as 'baseband' in the about section of the settings. Stock shows KH7. I've flashed the stock kk6 rom and just checked and it remains kh7 (flashed with Odin).

I did an OTA update to kk6 but neglected to check the modem that was installed with it.

Regardless, the wifi worked as designed under both older and newer stock roms.

I'll flash a rom this weekend and then flash modems to see if I can narrow it down. I'm in the process of moving so the next day or two are sort of out of the question :(
[AT&T Samsung Galaxy S II SGH-I777] penguinlogik:
I personally like WPA2 better (especially with dd-wrt), but to each their own. What do you have your wifi-sleep policy set to? (settings>Wireless->Wifi settings>Press menu button->advanced.)
[AT&T Samsung Galaxy S II SGH-I777] nst6563:
Sorry, it is WPA2PSK, but I've tried both.

Wifi sleep policy is set to never.
[AT&T Samsung Galaxy S II SGH-I777] Misterjunky:
RE: WIFI

If your phone is a Samsung i777 AT&T model and you want to get

your wifi working properly then simply download UnNamed v2.2.1

custom rom which is the very best custom rom currently available

for our phones. The UnNamed rom also has superior battery life.

The UnNamed v2.2.1 Custom Rom is not only the most stable and reliable

custom rom but it's also the most aesthetically pleasing rom which is currently

available for our phones. (i777 AT&T)

Since you have tried so many things already be sure that before flashing

another rom that you go into settings>privacy and select "factory data reset".

Then be 100% sure that you have done a "wipe data/factory" reset using

CWM Recovery before flashing another custom rom.

After you flash the UnNamed rom you will no longer have any wifi problems at all.

Be sure that after flashing the rom you make a nandroid backup of the rom

before you install any apps and or before for who knows what god forsaken reason

you should want to change or flash a different kernel rather than leaving it alone

and use the excellent kernel which the rom comes with.

Good Luck!
[AT&T Samsung Galaxy S II SGH-I777] nst6563:
You sound like an advertisement for UnNamed :p

Seriously though...I have tried UnNamed from 2.1.1 to 2.2.1

ICScrewD from 1.4 to 1.6.1, etc.

Wifi completely breaks if I flash the CWM or any kernel over the stock. I've flashed so many roms, kernels, and modems over the past 2 weeks I couldn't even begin to count how many.
[AT&T Samsung Galaxy S II SGH-I777] Jank4AU:
Just out of curiosity, have you tried connecting to wifi on a different router, like at work or a friends house...? Have you tried resetting your routers? With all that you've tried, it's just strange that you still can't get a connection.
[AT&T Samsung Galaxy S II SGH-I777] Entropy512:
I intentionally left the baseband separate from my UCKK6+root package because people often want to run a different modem than system.

Flashing a new baseband will do nothing for wifi - everyone who tells you that is too accustomed to HTC phones where Qualcomm AMSS runs EVERYTHING.

It's strange if anything but stock fails for you... UCKK6 wouldn't surprise me because it has all sorts of weird BCM4330 (wifi/bluetooth) problems, but I haven't heard of wifi regressions with my kernel when flashed on UCKH7.

Yeah... It's a little annoying. Yeah, Unnamed is an excellent firmware, but "best" is a matter of taste. It's funny that he's pimping a firmware when the firmware dev almost blocked him for that damn penis-gecko.
[AT&T Samsung Galaxy S II SGH-I777] nst6563:
Logging into a router at work wont do any good since i work from home. the neareat open wifi network is out of range. I did log in to chic fil a once but unfortunately i dont remember the reaults....my mind was focused on lunch.

I have also reset both routers i have here. tried different firmwares foe the routers as well but got the same result...but both of my routers are based on ralink chipsets. two different ralink chipsets at that, but still made by ralink.
[AT&T Samsung Galaxy S II SGH-I777] Misterjunky:
Forgot to mention

I forgot to mention, before you flash the UnNamed v2.2.1 custom rom

be SURE to flash the ODIN based CWM Recovery kernel, not the

CWM flashable kernel to start with.

(because who knows whiich kernel you have now since you have flashed so many)

Below is the ODIN flash CWM Recovery kernel which you should have

flashed in the first place when coming from the stock to custom rom.

MODDED SGH-I777_ClockworkMod-Recovery_5.0.2.3.tar:

http://www.multiupload.com/QQKN7NJAFT

Good Luck!
[AT&T Samsung Galaxy S II SGH-I777] ramnathan.r:
Try resetting the security type in the wireless modem/ router to a personal wireless security and try it out. I had some issues with Wifi but after the resetting of the router, the wifi has been working fine.
[AT&T Samsung Galaxy S II SGH-I777] penguinlogik:
In the advanced wifi settings, enable up to channel 14, and set your router to channel 11+40mhz (150mbps) and see if that works. Channel 1 might have too much interference for this phone or something... not sure.
[AT&T Samsung Galaxy S II SGH-I777] Nizda1:
Correct me if I'm wrong but aren't channels beyond 11 for out of US region?

Sent from my SAMSUNG-SGH-I777
[AT&T Samsung Galaxy S II SGH-I777] penguinlogik:
From Wikipedia "In the USA, 802.11 operation in the channels 12 and 13 is actually allowed under low powered conditions. "

And its not like the FCC drives around looking for routers broadcasting in those channels, our routers are too weak to broadcast that far. But you're just enabling up to channel 14, doesn't mean that you're going to use it.
[AT&T Samsung Galaxy S II SGH-I777] swilbanks:
WiFi Fail MAC address Bluetooth address Unavailable

I am basically at the same point..WiFi Fail..It will scan and then turn back off. Started off with a stock phone..Followed the customizations steps..No problems reading the Flash Counter..Ran step 2c..It worked Great..passed..had UCKH7 but had no WiFi..Did the wipe data/factory reset as mentioned in other threads and WiFi returned..Then I did the OTA update to UCKK6 and WiFi was still working. So I downloaded Mobile Odin Pro from the market so I could complete step 3a. I had already extracted the zImage from Entropy's 1208 DD and placed it on my sd card. Ran MO on the phone selected the zImage and it ran flawlessly. I am still rooted and have CWM 5.0.2.7..but the WiFi shuts off again shortly after turning it on..So I tried the wipe data/factory reset again but it did not help this time. As far as I can tell everything else works great on the phone, calls, texts and so on...But after looking at some of the about phone settings..I noticed that both the MAC address and Bluetooth Address lines show unavailable...and I think that is why the WiFi shuts back down shortly after turning it on..Now I was going to move onto step 4 and flash UnNamed ROM for practice and then go back to stock using the guide..but I was wondering if I missed something important that caused the WiFi issue
[AT&T Samsung Galaxy S II SGH-I777] penguinlogik:
What are the first 6 characters of your mac address? (on stock) At this point... I'm thinking they might have changed the wifi chip or something...
[AT&T Samsung Galaxy S II SGH-I777] swilbanks:
Currently under... Settings..About Phone..Status..Wi-Fi MAC address & Bluetooth address show "Unavailable"

But since I have an access list enabled on my router...I would say my MAC address started with 04:46:65 I'll be able to verify that when I get it back.

I'm going to try another wipe and a different Entrophy Kernel and see what happens. I know I can get WiFi back by going through the steps again and I enjoy all the tinkering..so I just wanted share some of the stuff I was seeing.
[AT&T Samsung Galaxy S II SGH-I777] penguinlogik:
Hmm yeah... I have a samsung wifi chip while you have a Murata or something like that.
[AT&T Samsung Galaxy S II SGH-I777] swilbanks:
OK...After reading other threads..instead of going back and trying a different kernel..I decided to continue to step 4 of the customization process..Flashing a ROM in CWM. I put UnNamed 2.2.1 on the sd card..followed his instructions..and BOOM...I had WiFi and a MAC address on the first boot...FANTASTIC..

So I'm up and running on the 1208 DD with UnNamed 2.2.1
[AT&T Samsung Galaxy S II SGH-I777] GermanDude036:
I've had the exact same issue first when trying to root it and then when trying to revert to 2.3.4 after the 2.3.6 update. I'm currently stuck with 2.3.6
[AT&T Samsung Galaxy S II SGH-I777] penguinlogik:
Well UnNamed is based off of stock so it should theoretically work.

Backup your files, boot into recovery mode, and restore factory defaults
[AT&T Samsung Galaxy S II SGH-I777] nst6563:
I forgot about this thread until I got an email on it with activity. I actually did get mine working. It's not the fastest in the world...piss poor for an N connection actually...but I never looked up what the N speed was for this phone. Everything else connects at 300mbps.

What I did was reflash to stock with Odin. Do an OTA upgrade. Root it. Used Odin to flash the ROM (SHOstock right now - love it), and then used Odin again to flash the Siyah 2.6.7 kernel. Wifi seems pretty solid now.

First 3 octets of the MAC on my phone for wifi are 98:0C:82 which looks like Samsung.
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
My wifi wont work on any rom
[AT&T Samsung Galaxy S II SGH-I777] penguinlogik:
http://xdaforums.com/showthread.php?t=1361393

Try flashing another modem (such as UCKH7) ontop of the rom.
[AT&T Samsung Galaxy S II SGH-I777] MysticKing32:
http://xdaforums.com/showthread.php?p=21664928

I did but to no avail
[AT&T Samsung Galaxy S II SGH-I777] penguinlogik:
HTime for a replacement then
[AT&T Samsung Galaxy S II SGH-I777] PuffinNugz:
Strange. My wifi has worked great on EVERY rom. Never have had an issue with wifi.
[AT&T Samsung Galaxy S II SGH-I777] yobosimn:
I was a problem with my wifi as well. I just installed UnNamed 2.2.1 today. I tried connecting to my wifi and public wifi in other locations, it would say connecting but never connect. Then in the list of wifi networks, my network would be listed but next to it it would disabled, remembered. I had my bluetooth on at the time. when i shut off my bluetooth I had my phone forget my network then try reconnecting to it and it worked. So try turning on your bluetooth, connecting to wifi, turn off bluetooth, forget the wifi network and try reconnecting to wifi. That worked for me.
[AT&T Samsung Galaxy S II SGH-I777] Phalanx7621:
99% of all screw ups involve user error and or not wiping properly. How do I know this? Cause if it was ROM related everyone would be experiencing the problem right right. Wish I could help but i've tried all the roms for the gs2 and never had wifi problems.
[AT&T Samsung Galaxy S II SGH-I777] juancamilonieto:
You have a 9100 kernel so u need to install odin wigt the orogonal kernel and root the phone with another metod

Enviado desde mi SAMSUNG-SGH-I777 usando Tapatalk
[AT&T Samsung Galaxy S II SGH-I777] juancamilonieto:
Restore the original system and Try another root metod like doomlord

http://xdaforums.com/showthread.php?t=1285894

Next try if your wifi can work

Enviado desde mi SAMSUNG-SGH-I777 usando Tapatalk
[AT&T Samsung Galaxy S II SGH-I777] dandrumheller:
What worked for me

My wife finally got sick of the battery drain issues on stock 2.3.6 KK6 update, and asked me to "fix it" :-)

Used the Creepyncrawly's guide to rooting without updating flash counter:

-Odin3 OneClick UCKH7 with root package to revert to 2.3.4 and obtain root

-Installed MobileOdin lite, and using that flashed zImage of Entropy's DD 01/24/12 kernel to obtain CWM

-Did not install a custom ROM, as my wife wants to keep stock at least for the moment.

Upon rebooting, Wifi would not connect to my router, or identify any available networks. Device never had problems connecting previously, and my SGS2 on ICScrewD 2.0.1 was functioning fine.

Rebooted into CWM, and did a wipe of cache and dalvik. Rebooted, and WiFi still would not connect or find networks

Back to CWM again, and did a wipe data/factory reset. Another reboot, and WiFi was back to normal - connecting no problem.

I suspect the issue here may be that the guide doesn't specifically call for doing the wipe data/factory reset at that point. Many folks who are familiar with flashing ROMs may do this as a matter of course, OR if you are continuing with the guide and flashing a custom ROM, either the instructions for the ROM may ask you to do this, or in some cases the install script for the ROM may do it automatically. I should have suspected this would be a problem due to the change in base from KK6 back to KH7, but was hoping I wouldn't have to so my wife wouldn't have to restore all her apps.

Hope this helps someone else out...

DD
[AT&T Samsung Galaxy S II SGH-I777] crimsonconcepts:
Most mods will say to clear cache and do factory reset, some even say to do it 2-3 times (which I will say does somehow make a difference).

The issues are probably related to some settings or associations in the settings that are linking it to the original software and settings, and the new software doesn't reference the information in the same way, or is looking for different named information. Either way, I agree with wiping cache and factory reset.

On a side note there was a lot of information going around in here, and I just wanted to put my two cents in on it:

MAC address, this is the ID of your Network Adapter (In this case the wireless card). In 99.9% of the cases, this should never change. This is a unique ID that allows for network traffic to get to YOUR phone and not someone else's.

Baseband, from my understanding, this is related to the radio (cellular) communication and should have nothing to do with WiFi. The Baseband setting allows for some minor control over how you tell your phone what frequency to talk on. International versions and US versions of our phones talk on different basebands.

A few other things were mentioned that I thought might be good info. When you tell your phone to remember a network, it saves a mix of information into a table so that it can reconnect using that info when you get near it again. That information is unique, and if you change enough of the software (different mods) then it may look in different locations or even different tables to find the info. This is why telling it to forget the network and then remember it again, may fix the issue since you are resetting all the info.

The version of the Stock rom (KH7 or KK6) may effect this because they could use different modem drivers to connect to the Wifi.

All of this is just from my knowledge of computers, which is pretty good, but my knowledge of Android and Linux in general is kinda limited.

I am more then willing to admit if I am wrong, and would love for a developer to add any info that could help clear it up (for me and others).
[AT&T Samsung Galaxy S II SGH-I777] nifear4:
I was having issues and i think it was the modem drivers. But yeah the above post summarizes a good bit of what it might be. Try reloading firmware with clearing cache, memory and formatting. Also make sure the correct modem is installed. But in my case I loaded a wrong model on my phone that basically... Ahem* let's not go there bad memories. But yes. What ROM are you using?
[AT&T Samsung Galaxy S II SGH-I777] jazzboyrules:
I wonder why this is the case for some people... Some people lose the Wi-Fi on following those steps and some don't (like me).

I had upgrade OTA to 2.3.6 on stock and followed steps 2c and 3a (using Mobile ODIN Pro) from creepyncrawly's guide. Luckily the whole process was supersmooth, no glitches, Wifi, cellphone everything working perfectly well.
[Samsung Galaxy Nexus] nickles96:
I grabbed NFC TagInfo from the market. It scans my chase credit card, but can't for the life of me get it to see our passports.

Have the Google wallet apk installed and it works just fine.

Unlocked UNrooted 4.0.2 lte.

Has anyone successfully read a passport?
[Samsung Galaxy Nexus] waylo:
I haven't gotten it to work on my US passport either. There are some reviews for the app on the market which claim it does. I think for some non-US passports it may?

I also don't know if ALL US passports are using the same RFID. Mine does have the RFID symbol on the front cover, issued 2007, but it doesn't work.
[Samsung Galaxy Nexus] Tubes6al4v:
Passports require a PIN to decrypt.

My Norwegian passport does not work either.
[Samsung Galaxy Nexus] Royal2000H:
Credit cards with Paywave have NFC, and passports are said to have RFID.

I know NFC is built on top of the RFID technology, but the two may be different..?
[Samsung Galaxy Nexus] .synq:
It works on my Irish Passport
[Samsung Galaxy Nexus] magnimus1:
Ummm....isn't it a bad thing if passport info can be grabbed by a guy with a Nexus?

I haven't tried....so somebody re-assure me!
[Samsung Galaxy Nexus] waylo:
With the aforementioned app, there's a separate section where you can input the bday, passport #, etc. which I think was necessary to get it to read the passport.

I tried filling it out with my own specific information. So I don't think you can directly read anyone's passport without this information punched in already. Regardless, it still didn't work, so not really a concern!

Also, wouldn't the information contained in the chip be similar to what you'd see if someone opened the passport?
[Samsung Galaxy Nexus] Evangelion01:
When I last went through customs at an airport, I remember that the person at the desk first scanned the bottom of the passport with a red laser. This provides the passport number, birth date and passport expiry date. Those details are required to access the information stored in the NFC tag.

In NFC TagInfo, enter your birth date, passport number and passport expiry date in the menu. Once that's saved, tap your passport against your Nexus and make sure you hold it there until your information is displayed - this can take around 20 seconds.

It's pretty cool tapping your passport and then seeing your picture appear on your phone.
[Samsung Galaxy Nexus] waylo:
20 seconds? Okay, maybe that's the trick. Will try.
[Samsung Galaxy Nexus] magnimus1:
Ah okay...Thanks for the clarifications!
[Samsung Galaxy Nexus] wolfman87:
NFC Has a range of about 4cm. So unless you're REALLY close to the guy...

:D
[Samsung Galaxy Nexus] rand0m:
took a few times to get the key properly created but then worked 4.0.1 uk passport (chip on back)
[Samsung Galaxy Nexus] Natolx:
Entering passport number etc into NFC taginfo did not work on 4.03 for my biometric US passport.
[Samsung Galaxy Nexus] fakker:
I tweeted about scanning my UK passport about a month ago...

I scanned Oyster card too with success

I have a habit of just trying to scan random things now, e.g. work keycard, security fob, etc...
[Samsung Galaxy Nexus] Royal2000H:
If they have to scan it before using the NFC... what's the point of the NFC? Is there anything there that's not in the passport itself?
[Samsung Galaxy Nexus] wolfman87:
Multi-level authentication.

Also:

Clipper Card (SF Transportation System) Scans OK

SmarTrip (Washington DC Transportation System) No Scan.
[Samsung Galaxy Nexus] nickles96:
Great information here!

I followed suggestions above and entered the passport info in the settings of the app. I tried it on a coworkers passport at the office. It was trying to read it, as it was emitting a sound over and over again like it was waiting to read.. but nothing ended up happening.

Fast forward to home tonight with my own passports. Re- entered my info , but nothing. It doesn't even make any sounds at all.

Scratching head.

I realize this is trivial nonsense and serves no practical use, but it sure would be a gee whiz factor if I could get this working.

Some folks on the gnex say they can, others cannot..

I'm not giving up!
[Samsung Galaxy Nexus] waylo:
For those of us interested in this parlor trick (let's call it what it is, it serves no real use for the common civilian), we'd like to know from those who got it to work:

1. US passport??! That's the original post and forum title!

2. How exactly are you entering in the data in the app? All caps? Etc.

Thank you.

EDIT: Oops, never mind about #2. Thought there was some sort of text entry for name/etc. It's just #s. So, hard to CAPITALIZE numbers =P.

I sat my phone on my passport for a few minutes without any sign of recognition. Guess my passport's a dud.
[Samsung Galaxy Nexus] Royal2000H:
Is there something on the nfc that's not readily viewable on the passport itself?
[Samsung Galaxy Nexus] Buff McBigstuff:
I don't know the first thing about NFC or passports but maybe a fake passport wouldn't have the correct information. Maybe even if it had the correct information it wouldn't have the right encryption on it or something.